Şemseddin of Karaman

Şemseddin Bey (died 1352) was a ruler of the Karamanid beylik in Anatolia and a son of İbrahim Bey. In 1350 he succeeded his brother Ahmet Bey as the tenth bey of Karaman, but his reign lasted only about two years.

In 1352, during the dynasty's succession struggles, he was believed to have been poisoned by one of his brothers. His son Savcı Bey later ruled Alaiye as its bey.